LTC2870CFE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2870CFE#TRPBF is a robust pin-configurable multiprotocol transceiver supporting RS232, RS485, and RS422 protocols. It operates on a single 3V to 5.5V supply with a 1.7V to 5.5V logic interface. The device integrates an RS485 differential transceiver and two RS232 single-ended transceivers on shared I/O lines. Key electrical parameters include a maximum data rate of 20Mbps for RS485 and 500kbps for RS232. It features integrated DC/DC boost converters generating VDD (+7V) and VEE (-6.3V), eliminating external supplies. ESD protection ratings are ±26kV (HBM) on interface pins. The component is housed in a 28-lead plastic TSSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Pin-controlled integrated termination resistors allow easy interface reconfiguration without external components.
• Half-duplex switching capability supports both four-wire and two-wire RS485 configurations.
• Logic loopback mode steers driver inputs to receiver outputs for diagnostic self-testing.
• RS485 receivers feature full failsafe operation to prevent UART lockup during floating or shorted conditions.

Drivers, Receivers, Transceivers Applications

• Point-of-Sale Terminals
• Cable Repeaters
• Protocol Translators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging when sourcing. Confirm the FE suffix corresponds to the 28-lead TSSOP package variant. Ensure the C grade meets the required 0°C to 70°C operating temperature range for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this part over the LTC2871 if shared I/O lines for RS232 and RS485 are acceptable. Verify that the 28-pin TSSOP footprint fits the PCB layout constraints. Consider the H-grade variant if operation below 0°C or above 70°C is required.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2870/LTC2871 family of multiprotocol transceivers manufactured by Analog Devices. It shares functional similarities with the LTC2871 but differs in pin configuration and channel independence. The CF designation indicates the commercial temperature grade within this product line.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2870CUFD#TRPBF offers the same functionality in a QFN package. LTC2871 variants provide independent control of transceivers on dedicated I/O lines rather than shared lines.